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Old 06-12-2010, 12:45 AM   #1
noideaatall
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converting from standard mobi to compressed mobi

I've got a directory of .mobi files and a device with not that much memory but which can read compressed mobi files. Is there some tool that can go through my directory and convert the mobi files to a mobi file with different specs?

I've googled this for ages - any2mobi has been mentioned for making copressed files but it looks like I would have to convert away from mobi so it could open the files which seems dumb and I cannot even find any2mobi - I think it used to come with calibre but doesn't anymore?
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Old 06-12-2010, 11:51 AM   #2
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Calibre (via the GUI, or using ebook-convert), converting from mobi to mobi will compress the result. This does involve more than compression though, since Calibre will run though its standard ebook processing.
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Old 06-12-2010, 12:14 PM   #3
noideaatall
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oh thanks, I'll stop going crazy trying to find how to do it then.

In this case most of my files should already be compressed. Odd they still seem larger then I would have expected an uncompressed text file to be. Oh well I can live with it.
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Old 06-12-2010, 12:29 PM   #4
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In this case most of my files should already be compressed.
If you created them using Calibre a long time ago (at least a year ago), they will probably be uncompressed. The original Calibre MOBI output was uncompressed by default, but that was changed at some point.
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Old 06-12-2010, 01:06 PM   #5
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some are old, some I got already as a mobi and may not be converted. So it seems like it might be a good idea to convert them all again.

I'm not finging it a little tricky to use the command line. I'd like to convert everything from one directory and put the new compressed files in another directory - to see how much smaller they are and avoid the file names clashing.

any idea how to do this?
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Old 06-19-2010, 04:34 AM   #6
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Quote:
Originally Posted by noideaatall View Post
some are old, some I got already as a mobi and may not be converted. So it seems like it might be a good idea to convert them all again.

I'm not finging it a little tricky to use the command line. I'd like to convert everything from one directory and put the new compressed files in another directory - to see how much smaller they are and avoid the file names clashing.

any idea how to do this?
I don't know how to do it with Calibre, but you could unpack the files with mobiunpack.py, and then re-compile with KindleGen. This should get you the highest compression with fewest changes to the files.
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Old 07-11-2010, 03:10 PM   #7
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you can use kindlegen to achieve different levels of compression. i don't know if it will accept a mobi file as the source file though.
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